The Design and Evaluation of Transmit and Receive Antennas for an Ionospheric Communications Probe System: A. Multiband Dipole Antenna

Abstract

This thesis reports the design, performance evaluation and construction of a transmitting antenna for an HF communications probe system. A short range-ionospheric communication link between Monterey, CA, (transmit site) and San Diego, CA, (receive site) was established to test the software and hardware of this probe system. The Multiband Dipole Antenna was selected as the more practical antenna for this link, using less real estate and support structure than other alternatives. The antenna was constructed and installed at the NPS beach site where the ground constants were measured accurately. Numerical Electromagnetics Code (NEC) analysis and measurements show that the antenna operates with low input VSWR (<1.5), is insensitive to electrical ground characteristics and has excellent radiation patterns for short range ionospheric communication links. Based on the observed signal strengths at San Diego, the antenna appears to be performing very well.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1992
Accession Number
ADA262010

Entities

People

  • Sotirios G. Perros

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Antennas
  • Bandwidth
  • Classification
  • Computer Vision
  • Computers
  • Conductivity
  • Couplings
  • Data Sets
  • Digital Data
  • Geometry
  • Impedance
  • Measurement
  • Radiation Patterns
  • Real Estate
  • Standing Waves
  • Transmission Lines
  • Waves

Fields of Study

  • Engineering

Readers

  • Coastal and Marine Engineering/Sediment Transport/Hydraulic Engineering
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Tactical Satellite Communications Systems Engineering.